Observations of the atmospheric thermodynamic structure, wind profiles and surface energy budget components from the Eastern Arctic Ocean in July through early October 2014.

The data were collected and processed as part of the Arctic Clouds in Summer Experiment (ACSE) during the SWERUS-C3 expedition onboard the icebreaker Oden.

The observational data are combined with model simulation output from six regional climate models. Models and observations are colocated every hour with the icebreaker's position, facilitating model versus observations, and inter-model, comparison efforts.

Attributes are included for each variable, describing the variable long name, averaging method (cell_methods), units, and missing values. Grouping observations and models together in the same netCDF files facilitates straightforward comparisons between the observations and the models.

Observational data include general meteorology measurements from near-surface sensors onboard Oden, retrievals of data products from remote sensing instrumentation, and radiosounding profiles launched continuously every 6 hours. Besides the 6 hourly radiosoundings, all other measurements/data products are produced at much higher temporal frequencies. From these higher frequency measurements/products, 1-hour averages and instantaneous snapshots were produced. The following measurements/data products are included in these files, including citations to where the raw measurements can be found:

Temperature and specific humidity profiles as a function of pressure and height.

Wind speed and wind direction as a function of pressure and height.

Regional climate model (RCM) output of general meteorology, energy fluxes, and vertical profiles of thermodynamics, dynamics, and cloud microphysics are included in the 1D and 2D data files for six models, with a total of 10 different simulations. These models include the

HIRHAM5,

CCLM,

MAR_v3.9.6,

CAFS,

WRF_CU and

MetUM.

The HIRHAM5, CCLM, and CAFS RCMs provided more than one simulation (Sedlar et al. 2020). Each model simulation is stored as a group in the netCDF files under the following names (see Tables 1 and 2 in Sedlar et al. 2020 for model details):

Comments

A detailed description of the meteorological measurements is found in Sotiropoulou et al. (2016).

Details regarding the retrievals of cloud microphysical properties from combined cloud radar, lidar and thermodynamic profiles, are found in Achtert et al. (2020).

Contact information

Email address

[javascript protected email address]

Phone number

+13033965454

Postal address

Joseph Sedlar
325 Broadway Ave
80305 BoulderColorado
USA

Metadata

GCMD science keywords

Earth science > Atmosphere

GCMD location

Ocean > Arctic Ocean

Status

Completed

Dataset language

English

Project

Arctic Clouds in Summer Experiment (ACSE). This was a component in the SWERUS-C3 international research expedition 2014 using icebreaker Oden in the Arctic Ocean, with base funding from the Swedish Knut and Alice Wallenberg Foundation. ACSE was funded by the following grants: Office of Naval Research: N00014-12-1-0235; Swedish Research Council (VR) 2013-5334 and 2012-5098; Knut and Alice Wallenberg Foundation 2011.2007; Stockholm University Faculty of Science Dnr SU FV-5.1.2-2419-13; UK National Environmental Research Council NE/K011820/1.